309 Fraternitas
Fraternitas (minor planet designation: 309 Fraternitas) is a typical Main belt asteroid.[2] It was discovered by Johann Palisa on 6 April 1891 in Vienna.
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 6 April 1891 |
| Designations | |
| (309) Fraternitas | |
| Pronunciation | /frəˈtɜːrnɪtæs/ |
Named after | fraternity |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 125.03 yr (45667 d) |
| Aphelion | 2.97127 AU (444.496 Gm) |
| Perihelion | 2.35779 AU (352.720 Gm) |
| 2.66453 AU (398.608 Gm) | |
| Eccentricity | 0.11512 |
| 4.35 yr (1588.7 d) | |
| 190.308° | |
| 0° 13m 35.785s / day | |
| Inclination | 3.71999° |
| 356.574° | |
| 310.477° | |
| Physical characteristics | |
| Dimensions | 45.32±3.3 km |
| 22.398 h (0.9333 d) | |
| 0.0595±0.010 | |
| 10.7 | |
Analysis of the asymmetric bimodal light curve of the asteroid from photometric data collected during 2014 provide a rotation period of 22.398±0.001 h with a brightness variation of 0.12±0.01 in magnitude.[3]
References
- "309 Fraternitas". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 15 September 2020. Retrieved 11 May 2016.
- "Osculating elements from astorb-database for 309 Fraternitas". The Centaur Research Project. Retrieved 5 April 2015.
- Pilcher, Frederick (January 2015), "Rotation Period Determinations for 275 Sapientia, 309 Fraternitas, and 924 Toni", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, vol. 42, no. 1, pp. 38–39, Bibcode:2015MPBu...42...38P.
External links
- 309 Fraternitas at AstDyS-2, Asteroids—Dynamic Site
- 309 Fraternitas at the JPL Small-Body Database
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